Keith Cowing: Scott is on his way to the summit of Mt Everest. He departed IMG Base Camp just after 4 am local time this morning (7 May) with his Sherpa guide Danuru. The moon was out and the sky was crystal clear. ETA at the summit is 7-8 pm EDT 10 May (5-6 am 11 May Nepal time).

Update: At 12:14 Nepal time Scott radioed in to Base Camp that he had arrived at Camp II.